Elastic cement.



UNITED STATES PATENT OFFICE.

JOHN D. EDMISTON, OF CAVE SPRINGS, ARKANSAS, ASSIGNOR T HOMER H. DUNLAP,

OF OKLAHOMA, OKLAHOMA.

ELASTIC CEMENT.

No Drawing.

To all whom it may concern:

Be it known that I, JOHN D. EDMISTON, a citizen of the United States,residing at Gave Springs, in the county of Benton and State of Arkansas,have invented certain new and useful Improvements in Elastic Cement; andI do declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the. art to whichit appertains to make and use the same.

This invention relates to improvements in silo coating or elastic cementespecially designed as a filler.

The object of the invention is to provide a composition of thischaracter which will tightly close spaces in or between solidsub stancessuch as wood, steel or iron and which will form an air or water-tightlining or covering when applied rendering it especially useful in theerection of silos.

This cement is composed of gilsonite 8%, with variation of from 2 to15%, rosin 2%, with variation of from 3; to 16%, graphite 8% withvariation of from 2 to 15%, pine creosote oil 15%, with variation offrom 2 to petroleum residue 42%, with variation of from 15 to 50%,asbestos 25%, with Variation of from 10 to 50%.

30 In preparing the cement compound the Specification of Letters Patent.

Patented Dec. 29, 19141.

gilsonite and the rosin are placed together in a. tank and cooked. Theoils are then added, then the graphite and last while the mixture isstill warm the asbestos, the ingredients all being thoroughlycommingled.

The cement formed by the combining and cooking together of the abovementioned ingredients is designed to be used as a filler for fillingcracks or joints or openings of any kind between solid substances,either wood, steel, iron or other metals and is especially designed as alining or coating for silos and when applied completely shuts out allmoisture and air thereby rendering the silo both air and waterproof. Itwill be obvious that while I have specified its use as applied to silosthat it may be employed for a great many other purposes.

I claim as my invention:

An elastic cement consisting of'gilsonite 8%, rosin 2%, graphite 8%,pine creosote oil 15%, petroleum residue 42% and asbestos 25%.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

' JOHN D. EDMISTON.

Witnesses:

J. W. HURD, J. E. SMITH.

